Repeating device for phonographs



A. SOLMAN ET AL REPSATING DEVICE FOR PHONOGRAPHS x Filedom. 23, i925 Maan 16 192e. 1,577,308

Patented Mar. 16v, 1926'.

y UNH Sl*elEtf? deslice.,

ANTON? soia/IAN ANnvsfrANrEYf soH'ReErrE'R, oe.A rrrrseireen PEnitsnvANIei-r AssreNoRs'oFrt'r-Wo; HUNDRED Ann To SAID! som/LAN AND -EreHTY-snvnni Tirrena -irrnennirairn nriarnrfrrs roesirinY l REPEATINGYDEVCE ron PironoGnA-rirsf fippiieationcmed october 23, 1923. seriind. evozs.

Be itknoiv-n thatfvve, NTN' SoLMAn and` SrANLEY SCHROEER, citizens of the United States', and resideiits'f'of Pittsburgh, 111 the county of ,lle'gli'eiiy:` and4 State of: Pennsyl Vania', have invented' arnevviand/usefuliIinprovenant' inL Repeati meester-"Phono gr "rsgmid'i we deahrby dclarait@ for.

,` f Clear', ,and` eXa'etV descripldwin" ,to be" a full tion' th 1 @iii-inventionrelates t'devices for 'Gaus`- in'gf a phonograph to repeat-, the playing o records; and one ofi obj eets is to provide a simple" andelieetlve devieeof this character' which shall be inexpensive in construetion1 and shallbe' neat? and'attifaotive in appearance.' Afnother' object-ot" our' Yinvention is to "provide a repeating device oi" the char acter indicated which shall be capable o't/ad:

justiie'ntt'o adapt it" tophoiiog'raphs ot .dif- Y position on'tlie turnt'abl'e ofi a plionfograph;

together with' a i repeating" deviee constructed in" a'Ceordance-With our' invention Fig.v 2' is a similar pla-ii` View` sho'iving'jthe" position of the pa'rtslat the time-When the'needle is'released from-the guide and is allowed4 t'o engage the'sereivshaft; Fig'. 3' is an enlarged bottom pl'anV view ot our repeating device; Fig; 4lA is an enlarged" cross sectional view' tlirough the repeating' device, the section b'enb ,aken subst'antiallyon -thel line` 4 4, Fig; 1; Fig. is afragmeiitary vieiv,fpa`r"t ly 'in vertical sectionV ancl] jartly' inv4 side elevation', showing the adjustable Vconstruction of'theguideA and the manner'in which the screw shaftl `returns tlieneedle' to the-starting positionn the'section'beiiigtalen sub-v stantially on vthe -line-5-5, Fig. l; and Figi` Gbis anj enlarged" transverse s ectiontlirough the" casing and screwr` shaft sho'iving the adjustable'connection between thepivotmem ber and the' casing,.- tlie section 'beingV taken substantially'on' the line G-LGfF'ig l."

As slfi'oivn intlie dratvingfthe device oons'ists o'tffourman parts,y a casing orbody adjacent to the bearing'r 7 is Widenedfas shown at 8l to form a flat bearing surfacev which prevents undue tilting of the device.

of afriction-roller lOwvhich is oarriedby the screavshaft 3.v Y The shafty Silas a screw-threadedportion 11 of suljlicientlengtli tospan the record band of the largest, standard size ofdiso phonograph records. The remainder 'of` the scretiY slia'ft'maybe left plain, andthe casing;Y 2fis preferably 'so shaped as to'enolose the plainor inactive portion'off the shaft ifwi-th a housing,as indicated atvl2. The lower edgesfojf thegoasingQ adjacent to thehousingl portion 12 aregsliglitlyllared outivai'dly'as shown at Figs: Saud 6,-to foringuideivays-ffor the pivot member `5 whit-li" has an undercut `slot let fitting: overl the! housing so Vthat the pivotmember mayV be adjusted lengthwise ofv the' housing to adapt the/device to" p honograph records vol' dili'erent diameters; 'The pivot member 5`is providedQ with aneXteusiOn l6` having-an opening- '17 of ysuitable size to litV overfthe usual pin which projects up-ivardlvfrom the Center of the turntable olii a disc phono-- graph. Such a pin is indicated-M18, Figs.' l and?. V Y

The end ol' theliousing l2 opposite tothe 'animeren-.earners TETES v bearingsliiand Ito receive the ends ofl the-,screw` 'shaft 3. The endofthe easing 2 provided on its under surface with :ushee Eloi? friction material as shown in Fig.Y 5.'

This :sliee intendedy to .rest on' the' plain portionjof a reoordfQQ-betiveen the record,- band-andtheLouter edgefoi' the record,-an dthe frictionlsetf up between the' record and the shoe 2l' .tends to move the screw threaded portion of' the device downivardl7 as shown' in Figs.Y l' and 2, this movement, hoive'ver, being' prevented whenV the' needle" oto the phonographengages the needle guide.

The-needle guide @i iscomposedvot tivo parts, a stationary,f member 23 and an' adjustable member 2115.5 Bothfof these members are suitablyV provided with projecting portionsY of Celluloid, horn or other similar material, this construction beingbest' shown in Figs. Sand 5 -Where the xedlmember- 23 carries a strip 25 securedt'o its under surface by means oit rivets or the like, while [he adjustal'ile member lflcarries a similar strip 26 secured to its upper surface by means ot rivets or the like. The adjustable men'lber 24; of the needle guide is secured to the easing 2 by means of a member 28 which, as best shown in llig. a, has an undercut slot which lits over the beveled edges l5 ot the casing member By adjusting the member 2li lengthwise, the ellective length oit the needle guide may be varied to sint records of diil'erent sizes.

The stationary portion 23 of the needle guide has a notch 29 formed opposite to the end o t the screw shalt 3. 'lhis notch should be adjusted to the outer edge of the playing portion of the record, andserves to guide the needle to proper position on the record when the needle leaves the screw shaft ll on its return movement.

In operation, the disc record which is to be played is placed on the turn-table and fitted over the central pin 18. lf the pivot member is not in the proper position on the casing 2 to bring the outer portion i2() of the repeater upon the smooth outer portion ol the record, the pivot member 5 is adjusted lengthwise ot the casing Q to bring theportion Q() to the proper position. Also, the el'lfective length of the needle guide is adjusted so that the needle will run oli the inner end `oli the needle guide just aiter it has finished playing the record. Then these adjustments have been made, the ring of the pivot member 5 is placed over the pin 18 and the turn-table is started. The needle 2l() is placed upon the record at the outer edge of the record band, at which time the needle occupies the notch 2l) in the needle guide, and takes the position shown in dotted lines at the right of Fig. 5. rlhe rotation of the disc in Contact. with the rio tion wheel 9 rotates the screw shaft 3 continuously, and when the needle reaches the end ot the record band and runs oil the inner edge ot the needle guide, the trictional engagementbetween the under side of the enlargement 20 and the surface of the record causes the entire repeating device to swing in a clock-wise direction, Figs. l and 2, until the needle 30 is engaged by the screw1 shaft 3 as shown in Fig. 2. There upon the rotation of the shaft 3 causes the needle to more to the right as seen in the drawing, (sec particularly Fig. 5) the needle being guided bythe screw threads on the shaft 3 until the needle reaches the end of the screw-threaded portion of the shalt, whereupon the small nnthreaded portion 32 at the outer end of the shaft 3 gives the needle an impulse or kick, which returns the needle to the notch 29 and brings the needle again into contact with the record at the beginning oli the record band. This operationI continues as long as the turn table is driven, and the sound box and tone arm of the machine are of course carried back and torth with the needle.

We claim as our invention:

l. A repeating device for phonographs comprising a screw shalt, means ior rotating said shalt, means tor guiding a phonograph needle adjacent to said screw shalt while said needle is in reproducing contact with a record, means it'or then causing said needle lo engage said screw shaft, thereby causing said screw shatt to return said needle to its starting position, a pivot member tor mounting the device upon the central pin ol. a phonograph turntable, and means :tor adjusting the said pivot member lengthwise with respect to said screw shaft.

A repeating device lor phonographs comprising a screw shaft, means for causing the shaft to be rotated by means ot a rotating phonograph disc record, and a needle guide adjacent to said screw shaft, said guide being adapted to maintain the phonograph needle ont ot contact with said screw shalt while said needle is in playing engagement with said record, and being adapted to release said needle when the needle reaches the end of the playing portion oi the record, whereby the said screw shalt returns said needle to its starting position.

3. A. repeating device for phonographs comprising a needleaeturning screw shaft, a friction wheel on said shatt lor rotating the saine, means l'or mounting the shaft in position that said wheel will engage a rotating record and be driven thereby, and means ior eliec-ting engagement between a phonograph needle and said screw shaft when the needle has moved a predetermined distance along the record.

el. A repeating device for phonographs, comprising a needle-returning shaft, a supporting bracket tor said shaft, a perforated .lug on said bracket l'or pivotal connection to a turn-table post, a friction wheel on said shaft in position to be engaged and driven by the record when said bracket is connected to said post, and means for ell'ecting engagement between a phonograph needle and said screw shaft when the needle has moved a predetermined distance along the record.

5. A repeating device `for phonographs, comprising a needle-returning screw shaft, a, supporting bracket Ytor said shaft, means for effecting a pivotal connection between said bracket and a turn-table post, a friction wheel on said shalt in position to be driven by a rotating record, a friction member on said bracket at a point removed from said wheel and in position to seat upon the record, means for preventing movement ot said bracket with the record while the needle is moving across the face of the a friction Wheel on said shaft for .rotating the same, means or mounting the shaft in position that said Wheel Will engage a rotat- 1ng record and be drlven thereby andl to the rear of a phonograph needle7 means for" yieldaloly advancing said shaft toward the needle, and means for permitting Said shaft to engage said needle When the needle has reached a predetermined point in its path 15 of travel across the record.

In testimony Whereorn We, the said ANTON SO'LMAN and STANLEY SGHROEPFER, have hereunto set our hands.

ANTON soLMAN. STANLEY SoHRoEPFER. 

